Improvement in machines for dressing tiles



N,FETERS. PHOTO-LITHOGRAPHER. WASHINGTON D. CA

ilitteil States t ate-'1d Gemine,

'To all whom it may concern:

transverse bars B cn posts @for other sui-table sup- Aposite edges ofthe tile to be dressed, so that thelowcr GEORGE BARNEY,orzsWANroNQvERMoNn'AND VALENTINE e. BARNEY, y

or MINNEAroLI Letters Patent No, 107,435,

s, MINNESOTA.

lated- September 20, 1870.

IMPROVEMENT IN MACHINES PoR DRESSING TILES.

The Schedule referreiil to in these Letters Patent and making pari: ofthe same.

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- Be it known that we, GEORGE BARNEY, of Swanton, in the county VofFranklin and the State of Vermont, and VALENTINE G. BARNEY, ofMinneapolis, in the county of Hennepin and the State of Minne Sota, haveinvented a .newand improved Machine for Dressing'Tile; and we do herebydeclare that the following is afull, clear, and exact descriptionthereof, which will enable others skilled in'the art to make and use thesame, reference being had to the accompanying drawing forming part ofthis specification.

This invention relates to improvements in machines for squaring andfacing iloor-tile, and consists in an arrangement of a squaring-ii'ameabove a horizontal revolving dressing disk, and certain peculiarattachments thereto for holding the tilel to be squared and dressed onthe edges; also, an improved arrangement of apparatus for holding thetile upon the desk for facing, and alsoimprovementsin sand andwater-feeding apparatus, all as hereinafter described.

Figure 1 represents a front elevation of our improved machine;

Figure 2- represents a sectional elevation, perpendicular to the planeot' Iig. l; and

Figure 3 represents a top view of the same. A represents a horizontalrotating dressingdisk such as iscommonly used. Over this we arrange theports. .The vertical axle D ofrthe disk A is supported on these bars.They also support Ways E, on which we arrange the vertical frameF^,which holds the tile to slide back and forth across theupperface ofthe disk, the said frame being moved by a toothed rack, G', on one ofthe Ways E, and a pinion, H, and handcrank mounted on the frame F.

I is another vertical frame, which is mounted in supports attached toframe F, so as to have liberty to move upland down thereon'. It isconnected byalink, K, toa crank, L, attached to a shaft, M, supportedina cross-bar, N, of frame F, and attached to aline, 0, carrying anadjustable weight, P, at one end, and at the other a pendent handle, Q,for moving it to turn the shaft M, and raise or lower the frame I.

lhe frame F carries, at the bottom, and on one side, a clamping-bar, S,and opposite to ita movable clamp, attached to a. sliding-bar, T, forclamping the tivo opedge will rest on the disk A. This bar S is pivotedat S1 and jointed at S2 to a bar, S, made adj ustahle back and forth byascrew, S4, for adjusting the bar S perpendicular with the, disk A, sothat thetileclamped against bar S will be squared.

The frame I carries a trussing-block, U, attached adj ustably to thediagonal bar V on said'frame, and

intended to apply more or less of the Weight ot' theframe I to thestone.

The frame l is raised vby pulling'the liueO down at the end havingthehandleQ, for applying the stone,

.together with the weight P, which yis adjust-able, to

regulate the pressure. This frame I isto be provided with a. screw, orother adjustable stop, to arrest it when the stone is ground oit' to thereqnisitesize.

The stone being clamped edgewise, as shown iu dotted lines in lig. l, ismoved back and forth over the.

disk, by thecrank, pinion, and rack, before described, while the diskrotates under it and turns od' the edge perpendicular to the vert-icalbarfS.4

The clamp on the end of the bar T is composed of the angle-platea b, theplate (l, hook-shaped spring e, and roller j; lThe roller is placed infront of the plate u, to' be pressed against the edge of the stone, torollV up or down, to allow the stone to be tilted, when the edge againstthe vertical'bar S is brought up parallel with it. The springe isemployed to hold the roller, and the plate d is used to hold the rollerand spring against the plate b,.to prevent them from becoming displaced.

The bar T is' moved by a springing hand-lever, NV, which works over aratchet-bar, X, and engages therewith, to clamp the stone. This bar ismade in two parts, and jointed, so as to be extended or contracted forstones of different sizes. l

The presser-blok U is provided with small frictionrollers, q, in a-recess iu the lowercnd, and with'a yoke, h, passing under the rollers,holding them in the recess. This yoke is suspended from a bolt, i, insuch a way that it may move a shorty distance, laterally thrown, and isprovided with springs k, which, when not' is contact with the tile,holdit so' that the vertical-bars are at 'about equal distances from theblock. Z represents-springs piacedontwo sides of the block, between itand the springs k, Icalculated to bring the rollers back to :the centerwhen 'moved either' way' therefrom. This block is attached to thediagonal bar V by a bolt, in, and thumb-uut, so as to be adjusted alongthe bar from place to place, for stones of diercnt sizes, and it isemployed torrppiy the 'weight'ot the frame I, or a part thereof, to thetop of the stone.

The function ofthe. yoke and the rollers is to move with the stone'whereo'u y the yoke rests, when the edge is brought up against thevertical bar S bythe clamp at 't'heopposite side, to admit of thereadyadjustment of the stone.

The springsl.: throw the yoke back again-afterward,

and the springs Z", restore the rollers to the required position; p

For holding the face of the tile on the disk for dressing it, we employthe holding-disk n., having a vertieal spindle,` 1, mounted in the arm4q, projecting from the lower beam B, and supportedhy a brace, fr, orother suitable means.' This disk-is provided with the two clamping-barss, clamping-bar or hand-lever t, and ratchet-bar fw, for taking hold of'the tile. 4

In order to adjust the clamping-bars s" for stones oFdifTe-reut sizes,they are provided with anumber of holes, and are connected to the leverr by pins w" thereon rising np to a spring, y, which is ,a continua-vtion of thc hand-lever t, and is arranged to hold the bars's" on thepins, and to be readily raised up for :onnecting and disconnecting themin shifting for liferent sizes.

lhe spindle p is provided with another supportfz, 'above the arm q, andrevolues 'in its supports lby the action of the disk on the stone,which, being thus rotated, while subjected to the action of the disk,has a much smoother and more true and uniform surface imparted to itthan whenthe polishing or dressingdisk moves on the stone in the samecourse through- Wout the operation, as is now :the common practice.

A represents the sand-feedingtrough, suspended from the side ofthe frameB C. It hasa bottom, B', hinged bya leather, or other continuous hingeat C',

to the Yrear side Df, .which is lower than the front E. l fi Thisbott'm, which, therefore, descends toward the rear, is attached so as tobe supported higher or lower at the front, to make t-be descent more orless.

. One end of the trough is also higherthan the other, and at the highend the bottom isprovided with a small trough, l1,forconveyingwatei"upon the bottom at the high end.

The'bottom, which-projects slightly beyond the end of the trough at thellower vend, has a cross-bar, G',

shown dotted, to turn they water s o as to discharge upon the disk A,near the shaft D. This trough is loaded with sand on the bottom, andagainst the side D', leaving a marginof the bottom alonglth'ev frontedge uncovered, so that the water, entering at the spout l, will tiowalong the edge ofthe bank of sand, and carry` therefrom a small 'regularstream of sand onto the disk, the said regularity being due to the ob`lique bottom, which keeps the stream ot' wateragainst the edge ot thebank of sand.

Having thus described our invention,

Vters Patent- 1. The combination, with the rotary grinding-disk A, ofthe horizontally-moving frame F and the vertically movingl trame I, theflames F and I `being arranged for holding the tile to be acted uponby-the disk, all substantially as speciiied.

2. The combination, with the frame I, ofthe shaft M, crank L, link K,and weighted lever O, when arranged for moving thelf'rame I vertically,substantially as specified.

3. The combination, with the vertical holder S, on the frame I, of aclamping-bar, T, and clamping-head, and a presser, when theclamping-head and presser are provided with friction-rollers, to admitot` the ad. justment of the stone. when being. clamped' np to thevertical support S, substantially las specified.

4. rlhe arrangement ofthe bar S, for adjustment at its upper end,relatively withthe bed A,4 substantially in the manner described.

5. The arrangement ot' the presser U, for adjustment on the diagonal barV, substantially as specified. v

,6. -The combination, witli the angle-plate a b, ot' the roller f andspring e, substantially as specified.

7 The combination,l with the bar T, made adjustable as to length, andwitlrthe' angle-plate a 12-ot'tbe rollerf, spring e, and plate d,substantially as specied. v

8. The combination, with the block'U, of the. rollers y, substantiallyas specified.

9. The combination, with the rollers g and block U, ot the yoke h,springs L and I, all substantially as specified. l Y A 10. Thecombination,\vith the disk A, of the disk 1i, spindle p, clamping-barss, spring handle t, and ratchet-bar fa, substantially as specified. p

11.1Tbe adjustable connection of the clainlJing-bars s" withthe lever t'by means ot' thepins '10, and the spring y, substantially as specified.I

12. The feeding-trough A', having the adjustable oblique hinged bottomand water-trough, all arranged for operation, substantially asspecified.l

GEORGE BARNEY. `Witnesses:` VALENTINE G. BARNEY.

WM. L. SowLns, E. M. SoWLEs, H; O. HAMLIX, 4H. A. GALE.

XVe claim as new and desire to secure by ,Let-` Y

